Wikipedia
Quartus
Quartus (, Kouartos) was a Christian who sent greetings to friends in Rome through Paul of Tarsus (Romans 16:23).
According to church tradition, he is known as Quartus of Berytus and is numbered among the Seventy Disciples. He was Bishop of Beirut and suffered for the faith. He converted many to the Christian faith. His feast day is October 4.